this city is one of the most walkable in the country. no doubt. and the holidays bring visitors from all around the world. and today, mayor lee announced some plans for a new safety campaign to focus on hot spots, most dangerous to pedestrians. >> really doing a lot more enforcement strategically in all the area we need to with not only stops, not only enforcement and ticketing, but a serious effort to remind people that these are going to be spots where we are going to pay a lot more attention. >> this collaboration between police, public works, the health department expected to be finalized and implemented in early 2013. >> it's always a good day to walk around san francisco. but if you do it today, bring jackets, scarf, hat, sweater, anything to keep you warm. >> and if you do it after today you're going to need a jacket, an umbrella and you want a wind proof umbrella because it's going to be windy. outside now mainly clear skies, cool temperatures. they ten to drop. from the satellite perspective we are literally in the middle of the calm befo